Merging upstream version 1.67.1+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 45 insertions, 0 deletions

diff --git a/src/test/ui/rfc-2632-const-trait-impl/specialization/issue-95187-same-trait-bound-different-constness.rs b/src/test/ui/rfc-2632-const-trait-impl/specialization/issue-95187-same-trait-bound-different-constness.rs
new file mode 100644
index 000000000..1e6b1c651
--- /dev/null
+++ b/src/test/ui/rfc-2632-const-trait-impl/specialization/issue-95187-same-trait-bound-different-constness.rs
@@ -0,0 +1,45 @@
+// Tests that `T: ~const Foo` in a specializing impl is treated as equivalent to
+// `T: Foo` in the default impl for the purposes of specialization (i.e., it
+// does not think that the user is attempting to specialize on trait `Foo`).
+
+// check-pass
+
+#![feature(rustc_attrs)]
+#![feature(min_specialization)]
+#![feature(const_trait_impl)]
+
+#[rustc_specialization_trait]
+trait Specialize {}
+
+#[const_trait]
+trait Foo {}
+
+#[const_trait]
+trait Bar {}
+
+impl<T> Bar for T
+where
+    T: Foo,
+{}
+
+impl<T> const Bar for T
+where
+    T: ~const Foo,
+    T: Specialize,
+{}
+
+#[const_trait]
+trait Baz {}
+
+impl<T> const Baz for T
+where
+    T: Foo,
+{}
+
+impl<T> const Baz for T
+where
+    T: ~const Foo,
+    T: Specialize,
+{}
+
+fn main() {}